Here is the full list of all 60 Littlewood achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Find all Tarott Monster cards.
Catch 2500 fish.
Complete 150 quests.
Catch 2500 bugs.
Complete 100 quests.
Complete 50 quests.
Catch 1000 fish.
Chop 6000 trees.
Catch 1000 bugs.
Chop 3500 trees.
Mine 6000 ores.
Mine 3500 ores.
Gather 4000 items.
Donate all items to Museum.
Discover All Tavern Recipes.
Complete all Personal Goals.
Visit the Edge of Solemn.
Unlock all ultimate upgrades at the Crafting Workshop.
Catch 500 bugs.
Unlock all town wishes.
Catch 500 fish.
Gather 2500 items.
Harvest 4000 crops.
Get Married.
Catch 250 fish.
Harvest 2500 crops.
Craft 2500 items.
Adopt a pet.
Harvest 1000 crops.
Sell 1500 items.
Gather 1000 items.
Harvest 500 crops.
Upgrade all structures and areas to 10 stars.
Complete 25 quests.
Mine 1500 ores.
Chop 1500 trees.
Catch 250 bugs.
Gather 500 items.
Sell 700 items.
Complete 10 quests.
Harvest 100 crops.
Sell 50 items.
Sell 100 items.
Sell 300 items.
Meet 15 Townsfolk.
Catch 100 fish.
Craft 1000 items.
Mine 750 ores.
Chop 750 trees.
Craft 500 items.
Craft 250 items.
Meet 12 Townsfolk.
Meet 10 Townsfolk.
Mine 150 ores.
Catch 100 bugs.
Craft 100 items.
Gather 100 items.
Chop 150 trees.
Meet 5 Townsfolk.
Meet 3 Townsfolk.